CN216056233U - Pre-twisted strain clamp for large-span twisted carbon fiber composite core wire - Google Patents

Abstract

The utility model discloses a pre-twisted strain clamp for a large-span twisted carbon fiber composite core wire, which comprises parallel hanging plates, one end of the parallel hanging plate is fixedly connected with a triangular connecting plate, the two ends of the triangular connecting plate far away from the parallel hanging plate are respectively fixedly connected with a right-angle hanging plate, one end of the right-angle hanging plate, which is far away from the triangular connecting plate, is fixedly connected with a PS hanging plate, one end of the PS hanging plate, which is far away from the right-angle hanging plate, is rotatably connected with a heart-shaped ring, a preformed armor rod group is fixedly connected on the heart-shaped ring, by adopting the structure of the double preformed armor rods, the free sections in the two preformed armor rods are wound on the carbon fiber composite core rod to be fixed and stranded, the installation is convenient, in addition, the double preformed armor rods ensure the installation strength, meanwhile, the stress distribution of the lead is ensured to be uniform, stress concentration is prevented, stranded wires are not damaged, the vibration resistance of the lead is improved, and the service life of the lead is prolonged.

Description

Pre-twisted strain clamp for large-span twisted carbon fiber composite core wire

Technical Field

The utility model belongs to the technical field of power transmission cables, and particularly relates to a pre-twisted strain clamp for a large-span twisted carbon fiber composite core wire.

Background

With the rapid development of the power industry in China, the requirements on the wire strain fittings are higher in order to adapt to large-span and long-distance power transmission, particularly in mountains, oceans and crowd-dense areas. When the lead is erected, a compression strain clamp is needed at the joint of the lead and a tower, and the strain clamp is used for corner turning, connection and terminal connection. The pre-twisted hardware has extremely strong strain strength and no concentrated stress, plays a role in protecting and assisting vibration reduction of the wire, is easily subjected to crimping and damage of the wire due to the influence of the operating proficiency of workers and the construction process of the traditional compression strain clamp, and is easily subjected to the influence of breeze vibration or ice coating due to the fact that the tension of the overhead wire is large, so that the wire is easily subjected to fatigue strand breakage or even breakage accidents at the wire outlet position of the compression strain clamp. The traditional strain clamp can not meet the actual use requirement, and therefore a pre-twisted strain clamp for a large-span twisted carbon fiber composite core wire is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pre-twisted strain clamp for a large-span twisted carbon fiber composite core wire, which solves the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a stride across greatly that transposition type carbon fiber composite core is preformed strain clamp for wire, includes parallel link plate, the one end of parallel link plate is connected and is fixed with the triangle yoke plate, the both ends that parallel link plate was kept away from to the triangle yoke plate are connected respectively and are fixed with the right angle link plate, the one end that triangle yoke plate was kept away from to the right angle link plate is connected and is fixed with the PS link plate, the one end rotation that the right angle link plate was kept away from to the PS link plate is connected with heart-shaped ring, fixedly connected with preformed armor rod group on the heart-shaped ring.

Preferably, the twisted carbon fiber composite core rods are arranged in the two groups of preformed armor rods, the outer walls of the twisted carbon fiber composite core rods are wrapped with the protective strips, the two groups of preformed armor rods are spirally wound on the protective strips, and the winding angle of the preformed armor rods is not greater than 60 degrees.

Preferably, the preformed armor rods are made of galvanized steel wires, and the breaking tensile strength of a single preformed armor rod is greater than 1500 Mpa.

Preferably, the thickness of the triangular connecting plate is more than 20 mm.

Preferably, the total length of the parallel hanging plate, the triangular connecting plate, the right-angle hanging plate and the PS hanging plate after being connected is more than 2500 mm.

Preferably, the parallel hanging plate, the triangular connecting plate, the right-angle hanging plate, the PS hanging plate and the heart-shaped ring are made of hot galvanized steel, and the wire protecting strip is made of aluminum alloy monofilaments.

Preferably, parallel link plate, triangle yoke plate and right angle link plate use the integrated forging shaping, and parallel link plate, triangle yoke plate and right angle link plate junction use the galvanized bolt pin connection fixed, the PS link plate has the board both ends of holding to draw to pass through foraminiferous bolt fixed connection, and the terminal grafting of foraminiferous bolt is fixed with the split pin.

Compared with the prior art, the utility model has the beneficial effects that:

this it uses preformed helical strain clamp to stride across transposition type carbon fiber composite core wire greatly, through adopting two preformed helical yarn group structures, with two preformed helical yarn group in the free section winding treat fixed transposition type carbon fiber composite core stick can, high durability and convenient installation, in addition, the installation intensity had both been guaranteed to two preformed helical yarn strain insulators, guarantee simultaneously that the wire stress distribution is even, prevent stress concentration, do not harm the stranded conductor, the wire shock resistance has been improved, the life of wire has been prolonged, and parallel link plate, the triangle yoke plate, all adopt high strength galvanized bolt to connect between right angle link plate and the PS link plate, can make strain clamp when the wire receives breeze vibration or covers the influence of ice at the wire, provide the space for the deformation of preformed helical yarn group, avoid stress concentration fracture, the life of strain clamp has been improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention in connection with a wire;

FIG. 2 is a schematic structural view of a parallel hanging plate according to the present invention;

FIG. 3 is a schematic structural view of a triangular yoke plate according to the present invention;

FIG. 4 is a schematic structural view of the right-angle hanging plate of the present invention;

FIG. 5 is a schematic structural view of the PS hanging plate of the present invention;

FIG. 6 is a schematic view of the structure of the center ring of the present invention.

In the figure: 1. hanging plates in parallel; 2. a triangular yoke plate; 3. a right-angle hanging plate; 4. a PS hanging plate; 5. a heart-shaped ring; 6. a preformed armor rod group; 7. protecting the lines; 8. the stranded carbon fiber composite core rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the utility model provides a pre-twisted strain clamp for a large-span twisted carbon fiber composite core wire, which comprises aparallel hanging plate 1, wherein one end of theparallel hanging plate 1 is fixedly hinged with a triangular connectingplate 2, two vertex angles of one end of the triangular connectingplate 2 far away from theparallel hanging plate 1 are respectively fixedly hinged with a right-angle hanging plate 3, one end of the right-angle hanging plate 3 far away from the triangular connectingplate 2 is fixedly hinged with a PS hangingplate 4, one end of the PS hangingplate 4 far away from the right-angle hanging plate 3 is rotatably connected with a heart-shaped ring 5, and apre-twisted wire group 6 is fixedly connected on the heart-shaped ring 5.

In this embodiment, preferably, the twisted carbon fibercomposite core rod 8 is disposed in the two sets ofpreformed armor rods 6, the outer wall of the twisted carbon fibercomposite core rod 8 is wrapped by theprotection line 7, the two sets ofpreformed armor rods 6 are spirally wound on theprotection line 7 in a layered manner, the winding angle of thepreformed armor rods 6 is not greater than 60 °, the two sets ofpreformed armor rods 6 bear the pulling force applied to the twisted carbon fibercomposite core rod 8, the internal stress of the twisted carbon fibercomposite core rod 8 is reduced, the mounting strength of the two sets ofpreformed armor rods 6 wound in a layered manner is ensured, the stress distribution of the lead is ensured to be uniform, the stress concentration is prevented, the stranded wire is not damaged, the anti-vibration capability of the lead is improved, and the service life of the lead is prolonged.

In this embodiment, preferably, the preformedarmor rod group 6 is made of galvanized steel wires, the breaking tensile strength of a single preformed armor rod is greater than 1500Mpa, and the preformedarmor rod group 6 made of the galvanized steel wires with the breaking tensile strength greater than 1500Mpa can ensure that the tensile force borne by the preformedarmor rod group 6 is higher than the maximum value of the stress of the lead, so as to ensure the normal operation of the preformedarmor rod group 6.

In the embodiment, the thickness of the triangular connectingplate 2 is preferably more than 20 mm; thetriangular yoke plate 2 with the thickness larger than 20mm can ensure that the structural strength is enough when thetriangular yoke plate 2 receives the tensile force of the two groups ofpreformed armor rods 6, so that stress cracking is avoided, and the normal use of the strain clamp is ensured.

In this embodiment, preferably, the total length of theparallel hanging plate 1, the triangular linkingplate 2, the right-angle hanging plate 3 and the PS hangingplate 4 after being connected is greater than 2500 mm.

In this embodiment, preferably, theparallel hanging plate 1, the triangular connectingplate 2, the right-angle hanging plate 3, the PS hangingplate 4 and theheart ring 5 are made of hot-dip galvanized steel, and theprotective wire 7 is made of an aluminum alloy monofilament.

In this embodiment, preferably, theparallel hanging plate 1, the triangular connectingplate 2 and the right-angle hanging plate 3 are integrally forged and formed, the hinged parts of theparallel hanging plate 1, the triangular connectingplate 2 and the right-angle hanging plate 3 are hinged and fixed by galvanized bolt pins, the PS hangingplate 4 is fixedly connected with the two ends of the tension bearing plate by the bolts with holes, and the tail ends of the bolts with holes are fixedly connected with cotter pins in an inserting manner.

The working principle and the using process of the utility model are as follows: when the device is used, firstly, theline protecting strip 7 is wound on the stranded carbon fibercomposite core rod 8, then two groups ofpreformed armor rods 6 are wound on theline protecting strip 7 in a layered mode, then the free ends of the two groups ofpreformed armor rods 6 are fixedly connected with the heart-shaped ring 5, finally, theparallel hanging plate 1 is fixed on a tension string group or a tower, through adopting a double preformed armor rod group structure, the free sections in the two groups ofpreformed armor rods 6 are wound on the stranded carbon fibercomposite core rod 8 to be fixed, the installation is convenient, in addition, the double preformed armor rods not only ensure the installation strength, but also ensure the uniform stress distribution of the lead, prevent the stress concentration and do not damage stranded wires, improve the anti-vibration capability of the lead, prolong the service life of the lead, and theparallel hanging plate 1, the triangular connectingplate 2, the right-angle hanging plate 3 and thePS hanging plate 4 are all hinged, so that when the lead is influenced by breeze vibration or ice coating, provide the space for the deformation of preformedarmor rod group 6, avoid stress concentration fracture, improved strain clamp's life.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a stride across greatly that stranded type carbon fiber composite core wire is with preformed helical strain clamp, includes parallel link plate (1), its characterized in that: fixed triangle yoke plate (2) is connected to the one end of parallel link plate (1), the both ends that parallel link plate (1) was kept away from in triangle yoke plate (2) are connected respectively and are fixed with right angle link plate (3), the one end that triangle yoke plate (2) were kept away from in right angle link plate (3) is connected and is fixed with PS link plate (4), the one end rotation that right angle link plate (3) were kept away from in PS link plate (4) is connected with heart ring (5), fixedly connected with preformed armor rod group (6) on heart ring (5).

2. The pre-twisted strain clamp for the large-span twisted carbon fiber composite core wire according to claim 1, wherein: two sets of preformed armor rod group (6) twine on transposition type carbon fiber composite core stick (8), transposition type carbon fiber composite core stick (8) outer wall parcel has the line of protecting (7), and two sets of preformed armor rod group (6) layering spiral winding are on protecting line (7), the winding angle of preformed armor rod group (6) is not more than 60.

3. The pre-twisted strain clamp for the large-span twisted carbon fiber composite core wire according to claim 1, wherein: the preformed armor rod group (6) is made of galvanized steel wires, and the breaking tensile strength of a single preformed armor rod is greater than 1500 Mpa.

4. The pre-twisted strain clamp for the large-span twisted carbon fiber composite core wire according to claim 1, wherein: the thickness of the triangular connecting plate (2) is more than 20 mm.

5. The pre-twisted strain clamp for the large-span twisted carbon fiber composite core wire according to claim 1, wherein: the total length of the parallel hanging plate (1), the triangular connecting plate (2), the right-angle hanging plate (3) and the PS hanging plate (4) after being connected is more than 2500 mm.

6. The pre-twisted strain clamp for the large-span twisted carbon fiber composite core wire according to claim 1, wherein: the parallel hanging plate (1), the triangular connecting plate (2), the right-angle hanging plate (3), the PS hanging plate (4) and the heart-shaped ring (5) are made of hot galvanized steel, and the line protection strip (7) is made of aluminum alloy monofilaments.

7. The pre-twisted strain clamp for the large-span twisted carbon fiber composite core wire according to claim 1, wherein: parallel link plate (1), triangle yoke plate (2) and right angle link plate (3) use the integrated forging shaping, and parallel link plate (1), triangle yoke plate (2) and the articulated department of right angle link plate (3) use galvanized bolt pin articulated fixed, PS link plate (4) have hold the arm-tie both ends through foraminiferous bolt fixed connection, and foraminiferous bolt end grafting is fixed with the split pin.

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